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I messed up big time tonight guys. Before I go into it, please be gentle. I have very very little experience with electrical engineering, building this printer has been the most experience I've really ever had.

I have an E3d V6, and someone in my house who will remain nameless (me) decided to clean the hotend's nozzle with a brass brush, not thinking about/realizing it was powered on (yeah I know). There was a spark and the whole thing shut off.

After cursing for a few minutes I took off the LCD panel to look at the rambo, and didn't see anything out of the ordinary, aka crazy burn marks or discoloration . The 15A fuse in the rambo appears to not have blown. I cycled the power, and when I turn it on, the rambo fan powers up, but it seems a lot quieter, and the LCD screen stays dark. Since the LCD doesnt turn on, I'm assuming that the board got fried even though there is no obvious evidence.

Before I sadly order a new board, I want to make sure. Where is my best bet to look for a short? I feel like a total idiot! Thanks in advance.

There are 3 other fuses on the board. Thier micro fuses. I think there is a picture in the "manual" check them.
Do a search on the forum and im sure you will find a couple of postings with pictures. The rambo is a pretty tough board, so it may be ok..
Also make sure you didnt accidently swap the connectors on the lcd..

There are two other fuses besides the one that looks like a Car fuse.
They are small fuses that are in small sockets. One of them is blown, probably F3.

See these links for fuse locations and part numbers.

http://forum.seemecnc.com/viewtopic.php?f=36&t=5775


http://forum.seemecnc.com/viewtopic.php?f=37&t=2243

Eaglezsoar wrote:There are two other fuses besides the one that looks like a Car fuse.
They are small fuses that are in small sockets. One of them is blown, probably F3.

See these links for fuse locations and part numbers.

http://forum.seemecnc.com/viewtopic.php?f=36&t=5775


http://forum.seemecnc.com/viewtopic.php?f=37&t=2243

Awesome, thanks a ton. Just ordered a handful of them, will update when they get here!! Thanks again.

I had a similar mishap a few weeks ago. You can bridge the gap with micro clips attached to a mini fuse holder (10 amp) if you have a print that needs to be done before the fuses come. Mine printed for 20 hours like that until the fuses arrived.